Eh, brain farts happen, especially when it's on a subject as niche as ranged unit defenses. I can count on one hand the number of ranged units burly enough to stand out as potential lightning rods and arrow catchers. There's a reason that poor Echidna is always stuck in gimmick tier--nobody wants to pay 25-29 up for a tanky healer unless they can really make use of her SAW dragon buffs. At least she'll always have sideboob on her side.